<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<form action="/upload" method="post" enctype="multipart/form-data">
    姓名:<input type="text" name="username"><br>
    年龄:<input type="text" name="age"><br>
    头像:<input type="file" name="image" ><br>
    <input type="submit" value="提交">

</form>
</body>
</html>